Half to george morris



(No Model.)

W. H. THOMPSON.v APPARATUS FOR REVOLVING AND BLEVATING SCREWIPROPELLERS.

No. 496,495. Patented May 2, 1893. 1

K A R A I h) Q a #Q llnwninn 2 4k cu UNITED STATES PATENT OFFICEoWILLIAM HENRY THOMPSON, OF HAMILTON, CANADA, ASSIGNOR OF ONE- HALF TOGEORGE MORRIS, OF SAME PLACE.

APPARATUS FOR REVOLVING AND 'ELEVATING SCREW-PROPELLERS.

SPECIFICATION forming part of Letters Patent N0. 496,495, dated May 21893.

Application filed August 5, 1892. Serial No. 442,289. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM HENRY THOMPSON, a citizen of the Dominion ofCan ada, residing. at the city of Hamilton, in the county of Wentworth,in the Province of Ontario, Canada, have invented certain new and usefulImprovements in Apparatus for Revolving and Elevating theScrew-Propellers of Boats; and I do hereby declare that the following isa full, clear, and exact description of the construction and operationof the same, reference being made to the accompanying drawings, in whichFigure 1 is a side elevation of a boat embodying my invention. Fig. 2 isa plan of the same. Fig. 3 is a partial side elevation showing screwelevated. Fig. 4 represents end of screw frame. Y

One object of my invention is to provide a simple means for propellingboats with the ordinary screw propeller by hand, without the expenditureof much muscular labor, and dispensing entirely with rowing and theskill required to row.

Another object of my invention is to provide a simple and durable meansby which the propeller may be raised entirely out of the wateranddisconnected from its operating mechanism, without necessitatingprevious disconnection or removal of any of the parts of the apparatus.

To these ends the invention consists in certain peculiarities in theconstruction, arrangement and combination of the several partssubstantially as hereinafter described and particularly pointed out inthe subjoined claims.

In the drawings A, represents a boat.

B B are double grooved iron uprights attached to the horizontal basepiece 0.

D is the screw propeller wheel keyed on a short shaft E which passesthrough bearing blocks F, F, said bearing blocks being so arranged as tobe capable of sliding vertically in the grooves of the uprights B. B.and carrying the shaft and wheel along with them when it is beingelevated out of the water. The said blocks F, F, cannot go down fartherthan the position shown but can be moved upward to raise the wheel.

G is a vertical pinion (having its inner side formed cone shaped to outthe water with the least resistance) keyed on the inside end of theshort wheel shaft E.

H. H is a yoke or frame attached at its lower end to the bearing blocksF, F, and having attached to its upper end a rodI which is screwthreaded and made to pass upthrough the rear deck floor of the boat, andalso through an iron bracket J, bolted to the boat. A screw threadedhandle K is screwed on the top of the rod I and a smaller one L on theunder side, this device (or any equivalent one) secures the screw shaftand screw wheel in the proper place for operating, and also allows a Iready means of admitting the screw and its shaft to be elevated out ofthe water when necessary, as for sailing, &c.

The device for driving the screw may be described as follows, for asteam launch, steam may be used in the ordinary way, the drawings showhow the wheel can be operated by hand. M is the main driven shaft in thehull of the boat projecting out through the stem in the usual mannerthrough packing, and on the outer end of it is keyed a vertical pinion N(the inner side of it being coneshaped) made to engage with thecorresponding pinion G on the screw shaft E when the screw is operating,but not when the screw is elevated. On the opposite or inner end of themain shaft M which is held in suitable frame work 0, is keyed a bevelpinion P, and made to mesh into a corresponding bevel pinion S, keyed ona short shaft a, placed at right angles to the shaft M. on bearings Z),Z). Asmall chain wheel 0, 'is keyed on the same shaft, over which runs achain belt d, passes thence around a larger chain pulley e keyed on theshort, shaft f journaled on the framework 0. There are two fly or drivewheels Q. Q also keyed on the said shaft f, provided each with a handle9 for turning the wheels and driving the gearing. A small fly wheel h,is keyed on the shaft M to assist in propulsion. Steam or other motivepower of course can be applied to the shaft M if required, the objectbeing to use sails when the wind is favorable and at that time the screwis elevated out of the water so as not to impede the sailing of theboat. When there is no wind, or a contrary one, the boat can bepropelled by the screw being lowered in its frame and operated by hand,as shown.

Importance is attached to the fact that the inner ends of the pinions Gand N are coneshaped, because, as above stated, when thus constructedthey offer but little resistance to the progress of the boat. It will beobserved that as the engagement of the propeller shaft, E, with the maindriven shaft, M, is by vertical pinions, the necessity for removing ordis connecting any of the parts of the apparatus to permit saidprOpeller shaft to be raised and disconnected from its operatingmechanism when sails, or other means other than the screw propeller, isto be used to propel the boat, is obviated.

Having thus described my device and its advantages, What I claim as myinvention, and desire to secure by Letters Patent, is-

1. In a means for propelling boats, the combination of the screwpropeller, mounted on a shaft, a vertical pinion on the end of saidshaft, said pinion having a cone-shaped inner end, a main driven shaft,a vertical pinion on the end thereof, said pinion being designed to meshwith the pinion on the end of the propeller shaft and having acone-shaped inner end, and means for operating said driven shaft.

2. In a means for propelling beats, the combination with the screwpropeller, mounted on a shaft, a vertical pinion on the end of saidshaft, said pinion having a coneshaped inner end, a main driven shaft,and a vertical pinion on the rear end thereof, said pinion beingdesigned to mesh with the pinion on the end of the propeller shaft, andhaving a coneshaped inner end, of, a fly-wheel mounted on said maindriven shaft, a bevel pinion on the forward end of said shaft, a countershaft, a bevel gear thereon engaging said bevel pinion, a chain wheelalso mounted on said counter-shaft, a shaft, f, a chain wheel thereon,an endless chain-belt connecting said chain wheels, and cranks foroperating said shaft f.

In a means for propelling boats, the combination of the screw propeller,mounted 011 a vertically-adjustable shaft, a vertical pinion on the end.of said shaft, a main driven shaft, and a vertical pinion on the endthereof, said pinion being designed to mesh with the pinion on the endof the propeller shaft, with a yoke or frame having its lower endconnected with said propeller shaft, a screw-threaded rod projectingupward from the upper ends of said yoke or frame, a bracket throughwhich said threaded rod passes, and threaded handles on said threadedrod above and below the top of said bracket, substantially as shown anddescribed.

Dated at Hamilton, Ontario, Canada, this th day of June, 1892.

WVILLIA M HENRY THOMPSON.

In presence of WM. BRUCE, HERBERT FULTON.

